I agree that confiscation requires knowledge on who the owners are and rough amounts they own. With that knowledge, physical threats to demand exchanging crypto

I agree that confiscation requires knowledge on who the owners are and rough amounts they own. With that knowledge, physical threats to demand exchanging cryptos for safety or freedom could be used quite efficiently depending on the laws and customs of each country. The fact that the assets may not be easily traceable make them a more lucrative target for criminals to use unlawful threats against innocent owners as well.